Tip-enhanced Raman spectroscopy of graphene-like and graphitic platelets on ultraflat gold nanoplates

2015 ◽  
Vol 17 (33) ◽  
pp. 21315-21322 ◽  
Author(s):  
Farshid Pashaee ◽  
Faranak Sharifi ◽  
Giovanni Fanchini ◽  
François Lagugné-Labarthet
Keyword(s):  
Raman Spectroscopy ◽  
Linearly Polarized ◽  
Tip Enhanced Raman Spectroscopy ◽  
Gap Mode

TERS was used to investigate the graphene-like platelets in gap mode geometry using radially and linearly polarized excitation.

Gap-mode enhancement on MoS2probed by functionalized tip-enhanced Raman spectroscopy

2016 ◽  
Vol 109 (13) ◽  
pp. 133106 ◽  
Author(s):  
Abdulrahman M. Alajlan ◽  
Dmitri V. Voronine ◽  
Alexander M. Sinyukov ◽  
Zhenrong Zhang ◽  
Alexei V. Sokolov ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Tip Enhanced Raman Spectroscopy ◽  
Gap Mode

scholarly journals Tip-Enhanced Raman Spectroscopy and Imaging: An Apical Illumination Geometry

2008 ◽  
Vol 62 (11) ◽  
pp. 1173-1179 ◽  
Author(s):  
Zachary D. Schultz ◽  
Stephan J. Stranick ◽  
Ira W. Levin
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Near Field ◽  
Single Wall Carbon Nanotubes ◽  
Surface Distribution ◽  
Cresyl Blue ◽  
Polarized Beam ◽  
Linearly Polarized ◽  
Tip Enhanced Raman Spectroscopy ◽  
Radially Polarized

Results are presented illustrating the use of tip-enhanced Raman spectroscopy (TERS) and imaging in a top-illumination geometry. A radially polarized beam is used to generate an electric field component in the direction of beam propagation, normal to the surface, resulting in a 5× increased enhancement compared to a linearly polarized beam. This multiplicative enhancement facilitates a discrimination of the near-field signal from the far-field Raman background. The top illumination configuration facilitates the application of TERS for investigating molecules on a variety of surfaces, such as Au, glass, and Si. The near-field Raman spectra of Si(100), rhodamine B, brilliant cresyl blue, and single wall carbon nanotubes are presented. Sufficient enhancement is obtained to permit a sub-diffraction-limited resolution Raman imaging of the surface distribution of large bundles of carbon nanotubes of various diameters.

scholarly journals Tip-Enhanced Raman Spectroscopy with High-Order Fiber Vector Beam Excitation

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3841 ◽  
Author(s):  
Fanfan Lu ◽  
Tengxiang Huang ◽  
Lei Han ◽  
Haisheng Su ◽  
Heng Wang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Polarized Light ◽  
High Order ◽  
Raman Signal ◽  
Fiber Grating ◽  
Excitation Light ◽  
Vector Beam ◽  
Vector Beams ◽  
Linearly Polarized ◽  
Tip Enhanced Raman Spectroscopy

We investigated tip-enhanced Raman spectra excited by high-order fiber vector beams. Theoretical analysis shows that the high-order fiber vector beams have stronger longitudinal electric field components than linearly polarized light under tight focusing conditions. By introducing the high-order fiber vector beams and the linearly polarized beam from a fiber vector beam generator based on an electrically-controlled acoustically-induced fiber grating into a top-illumination tip-enhanced Raman spectroscopy (TERS) setup, the tip-enhanced Raman signal produced by the high-order fiber vector beams was 1.6 times as strong as that produced by the linearly polarized light. This result suggests a new type of efficient excitation light beams for TERS.

scholarly journals Localized enhancement of electric field in tip-enhanced Raman spectroscopy using radially and linearly polarized light

2013 ◽  
Vol 21 (21) ◽  
pp. 25271 ◽  
Author(s):  
Nastaran Kazemi-Zanjani ◽  
Sylvain Vedraine ◽  
François Lagugné-Labarthet
Keyword(s):  
Raman Spectroscopy ◽  
Electric Field ◽  
Polarized Light ◽  
Linearly Polarized ◽  
Tip Enhanced Raman Spectroscopy

Characterizing unusual metal substrates for gap-mode tip-enhanced Raman spectroscopy

2012 ◽  
Vol 44 (2) ◽  
pp. 227-233 ◽  
Author(s):  
Johannes Stadler ◽  
Benedikt Oswald ◽  
Thomas Schmid ◽  
Renato Zenobi
Keyword(s):  
Raman Spectroscopy ◽  
Metal Substrates ◽  
Tip Enhanced Raman Spectroscopy ◽  
Gap Mode

Surface-and tip-enhanced Raman spectroscopy of silicon

2008 ◽  
Author(s):  
K. J. Yi ◽  
X. N. He ◽  
W. Q. Yang ◽  
Y. S. Zhou ◽  
W. Xiong ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Tip Enhanced Raman Spectroscopy
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